package com.loop.netty.tcp;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;

import java.nio.charset.StandardCharsets;

/**
 * @author zhangxiaolu
 * @since 2023-09-23 22:44
 */
public class MyClientHandler extends SimpleChannelInboundHandler<ByteBuf> {

    private int count;

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
        // 接收回送的消息
        byte[] bytes = new byte[msg.readableBytes()];
        msg.readBytes(bytes);
        String s = new String(bytes, StandardCharsets.UTF_8);
        System.out.println("客户端接收到的消息=" + s);
        System.out.println("客户端接收到的消息数量=" + (++this.count));
    }

    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        // 使用客户端发送十条数据
        for (int i = 0; i < 10; i++) {
            ByteBuf byteBuf = Unpooled.copiedBuffer("hello Server" + i, StandardCharsets.UTF_8);
            ctx.writeAndFlush(byteBuf);
        }

    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
